./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 179a1ffc86769a00f66e166b0105235f9f4d772a412ed21eb988649ef2cb5874 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:19:08,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:19:08,505 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:19:08,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:19:08,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:19:08,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:19:08,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:19:08,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:19:08,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:19:08,543 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:19:08,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:19:08,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:19:08,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:19:08,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:19:08,544 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:19:08,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:19:08,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:19:08,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:19:08,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:19:08,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:19:08,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:19:08,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:19:08,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:19:08,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:19:08,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:19:08,545 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:19:08,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:19:08,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:19:08,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:19:08,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:19:08,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:19:08,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:19:08,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:19:08,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:19:08,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:19:08,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:19:08,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:19:08,547 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:19:08,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:19:08,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:19:08,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:19:08,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:19:08,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:19:08,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:19:08,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:19:08,548 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 179a1ffc86769a00f66e166b0105235f9f4d772a412ed21eb988649ef2cb5874 [2024-11-28 04:19:08,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:19:08,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:19:08,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:19:08,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:19:08,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:19:08,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i [2024-11-28 04:19:12,232 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/data/4e307cdeb/88e903b50fbc448b90123afb35180a86/FLAGb8d0ddf63 [2024-11-28 04:19:13,021 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:19:13,022 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i [2024-11-28 04:19:13,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/data/4e307cdeb/88e903b50fbc448b90123afb35180a86/FLAGb8d0ddf63 [2024-11-28 04:19:13,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/data/4e307cdeb/88e903b50fbc448b90123afb35180a86 [2024-11-28 04:19:13,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:19:13,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:19:13,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:19:13,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:19:13,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:19:13,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:19:13" (1/1) ... [2024-11-28 04:19:13,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bb7e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:13, skipping insertion in model container [2024-11-28 04:19:13,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:19:13" (1/1) ... [2024-11-28 04:19:13,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:19:13,647 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4503,4516] [2024-11-28 04:19:13,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4563,4576] [2024-11-28 04:19:15,048 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,049 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,050 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,051 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,052 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,074 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,075 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,078 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,084 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:15,084 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,556 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,558 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,591 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,597 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,598 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,615 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,616 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,617 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,617 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,618 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,618 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,618 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[228209,228222] [2024-11-28 04:19:16,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:19:16,713 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:19:16,729 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4503,4516] [2024-11-28 04:19:16,734 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4563,4576] [2024-11-28 04:19:16,792 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,792 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,793 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,793 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,794 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,801 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,803 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,804 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,805 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,807 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,809 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,809 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,812 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:16,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2024-11-28 04:19:17,054 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,054 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,063 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,066 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,067 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,078 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:17,103 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[228209,228222] [2024-11-28 04:19:17,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:19:17,366 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:19:17,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17 WrapperNode [2024-11-28 04:19:17,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:19:17,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:19:17,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:19:17,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:19:17,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,548 INFO L138 Inliner]: procedures = 764, calls = 2425, calls flagged for inlining = 66, calls inlined = 11, statements flattened = 831 [2024-11-28 04:19:17,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:19:17,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:19:17,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:19:17,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:19:17,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,599 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-28 04:19:17,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,663 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:19:17,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:19:17,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:19:17,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:19:17,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (1/1) ... [2024-11-28 04:19:17,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:19:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:17,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:19:17,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:19:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2024-11-28 04:19:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2024-11-28 04:19:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-28 04:19:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:19:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 04:19:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-28 04:19:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2024-11-28 04:19:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 04:19:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:19:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-28 04:19:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 04:19:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 04:19:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:19:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:19:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 04:19:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 04:19:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-28 04:19:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:19:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:19:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-28 04:19:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-28 04:19:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 04:19:17,872 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 04:19:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-28 04:19:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2024-11-28 04:19:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 04:19:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 04:19:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 04:19:18,354 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:19:18,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:19:19,367 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:19:25,134 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-11-28 04:19:25,134 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-11-28 04:19:25,287 INFO L? ?]: Removed 174 outVars from TransFormulas that were not future-live. [2024-11-28 04:19:25,287 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:19:25,311 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:19:25,311 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:19:25,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:19:25 BoogieIcfgContainer [2024-11-28 04:19:25,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:19:25,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:19:25,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:19:25,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:19:25,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:19:13" (1/3) ... [2024-11-28 04:19:25,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc1cedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:19:25, skipping insertion in model container [2024-11-28 04:19:25,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:17" (2/3) ... [2024-11-28 04:19:25,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc1cedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:19:25, skipping insertion in model container [2024-11-28 04:19:25,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:19:25" (3/3) ... [2024-11-28 04:19:25,332 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness_negated.i [2024-11-28 04:19:25,354 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:19:25,356 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_init_unbounded_harness_negated.i that has 19 procedures, 191 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:19:25,448 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:19:25,467 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@265a6b7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:19:25,467 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:19:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 04:19:25,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:19:25,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:25,488 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:25,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:25,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1734843285, now seen corresponding path program 1 times [2024-11-28 04:19:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:25,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292909495] [2024-11-28 04:19:25,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:19:34,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:34,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292909495] [2024-11-28 04:19:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292909495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:19:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890441136] [2024-11-28 04:19:34,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:34,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:34,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:34,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:34,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:19:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:42,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 4093 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:19:42,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:19:42,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:42,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890441136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:42,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:19:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:19:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531268764] [2024-11-28 04:19:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:42,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:19:42,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:42,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:19:42,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:19:42,626 INFO L87 Difference]: Start difference. First operand has 191 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:19:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:42,675 INFO L93 Difference]: Finished difference Result 371 states and 495 transitions. [2024-11-28 04:19:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:19:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2024-11-28 04:19:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:42,690 INFO L225 Difference]: With dead ends: 371 [2024-11-28 04:19:42,691 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 04:19:42,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:19:42,703 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:42,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:19:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 04:19:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-28 04:19:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 131 states have internal predecessors, (164), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 04:19:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2024-11-28 04:19:42,786 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 70 [2024-11-28 04:19:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:42,788 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2024-11-28 04:19:42,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:19:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2024-11-28 04:19:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:19:42,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:42,798 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:42,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:19:43,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:19:43,000 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:43,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1662150887, now seen corresponding path program 1 times [2024-11-28 04:19:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:43,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070358969] [2024-11-28 04:19:43,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:43,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:19:50,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:50,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070358969] [2024-11-28 04:19:50,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070358969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:50,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:50,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:19:50,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690174250] [2024-11-28 04:19:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:50,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:19:50,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:50,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:19:50,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:19:50,101 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:19:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:50,235 INFO L93 Difference]: Finished difference Result 316 states and 390 transitions. [2024-11-28 04:19:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:19:50,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2024-11-28 04:19:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:50,238 INFO L225 Difference]: With dead ends: 316 [2024-11-28 04:19:50,238 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 04:19:50,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:19:50,240 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:50,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 688 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:19:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 04:19:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-11-28 04:19:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 133 states have internal predecessors, (166), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 04:19:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 235 transitions. [2024-11-28 04:19:50,255 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 235 transitions. Word has length 70 [2024-11-28 04:19:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:50,256 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 235 transitions. [2024-11-28 04:19:50,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:19:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 235 transitions. [2024-11-28 04:19:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:19:50,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:50,258 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:50,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:19:50,258 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:50,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash -475052884, now seen corresponding path program 1 times [2024-11-28 04:19:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411867273] [2024-11-28 04:19:50,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:19:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:57,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411867273] [2024-11-28 04:19:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411867273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:19:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715594119] [2024-11-28 04:19:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:57,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:19:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:57,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:19:57,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:19:57,080 INFO L87 Difference]: Start difference. First operand 186 states and 235 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:19:57,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:57,235 INFO L93 Difference]: Finished difference Result 224 states and 278 transitions. [2024-11-28 04:19:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:19:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2024-11-28 04:19:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:57,238 INFO L225 Difference]: With dead ends: 224 [2024-11-28 04:19:57,239 INFO L226 Difference]: Without dead ends: 190 [2024-11-28 04:19:57,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:19:57,241 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:57,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 688 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:19:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-28 04:19:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-28 04:19:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 135 states have (on average 1.2518518518518518) internal successors, (169), 136 states have internal predecessors, (169), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-28 04:19:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2024-11-28 04:19:57,260 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 72 [2024-11-28 04:19:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:57,260 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2024-11-28 04:19:57,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:19:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2024-11-28 04:19:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:19:57,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:57,264 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:57,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:19:57,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:57,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:57,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1439224058, now seen corresponding path program 1 times [2024-11-28 04:19:57,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:57,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774237949] [2024-11-28 04:19:57,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:57,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:20:03,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774237949] [2024-11-28 04:20:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774237949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:03,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:03,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:20:03,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825459619] [2024-11-28 04:20:03,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:03,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:20:03,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:03,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:20:03,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:20:03,260 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:20:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:03,344 INFO L93 Difference]: Finished difference Result 224 states and 277 transitions. [2024-11-28 04:20:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:20:03,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2024-11-28 04:20:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:03,347 INFO L225 Difference]: With dead ends: 224 [2024-11-28 04:20:03,347 INFO L226 Difference]: Without dead ends: 190 [2024-11-28 04:20:03,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:20:03,349 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:03,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:20:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-28 04:20:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2024-11-28 04:20:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 133 states have internal predecessors, (164), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 04:20:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2024-11-28 04:20:03,363 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 77 [2024-11-28 04:20:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:03,364 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2024-11-28 04:20:03,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:20:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2024-11-28 04:20:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:20:03,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:03,366 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:03,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:20:03,366 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:03,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1011536445, now seen corresponding path program 1 times [2024-11-28 04:20:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397228905] [2024-11-28 04:20:03,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:20:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397228905] [2024-11-28 04:20:09,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397228905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:09,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:20:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568363727] [2024-11-28 04:20:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:09,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:20:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:09,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:20:09,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:20:09,373 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:20:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:09,545 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2024-11-28 04:20:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:20:09,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2024-11-28 04:20:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:09,549 INFO L225 Difference]: With dead ends: 296 [2024-11-28 04:20:09,550 INFO L226 Difference]: Without dead ends: 191 [2024-11-28 04:20:09,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:20:09,551 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:09,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 908 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:20:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-28 04:20:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-28 04:20:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 137 states have internal predecessors, (168), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (37), 35 states have call predecessors, (37), 34 states have call successors, (37) [2024-11-28 04:20:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 240 transitions. [2024-11-28 04:20:09,566 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 240 transitions. Word has length 94 [2024-11-28 04:20:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:09,566 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 240 transitions. [2024-11-28 04:20:09,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:20:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 240 transitions. [2024-11-28 04:20:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:20:09,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:09,568 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:09,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:20:09,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:09,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1521911148, now seen corresponding path program 1 times [2024-11-28 04:20:09,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:09,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213619279] [2024-11-28 04:20:09,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:09,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:20:18,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213619279] [2024-11-28 04:20:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213619279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:18,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:18,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:20:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171137195] [2024-11-28 04:20:18,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:18,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:20:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:18,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:20:18,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:20:18,744 INFO L87 Difference]: Start difference. First operand 191 states and 240 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:20:22,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:27,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:31,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:35,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:40,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:44,071 INFO L93 Difference]: Finished difference Result 235 states and 292 transitions. [2024-11-28 04:20:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:20:44,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2024-11-28 04:20:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:44,084 INFO L225 Difference]: With dead ends: 235 [2024-11-28 04:20:44,084 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 04:20:44,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:20:44,086 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 11 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:44,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1264 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 5 Unknown, 0 Unchecked, 24.7s Time] [2024-11-28 04:20:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 04:20:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2024-11-28 04:20:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 140 states have (on average 1.2357142857142858) internal successors, (173), 142 states have internal predecessors, (173), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (38), 35 states have call predecessors, (38), 34 states have call successors, (38) [2024-11-28 04:20:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2024-11-28 04:20:44,104 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 100 [2024-11-28 04:20:44,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:44,104 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2024-11-28 04:20:44,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:20:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2024-11-28 04:20:44,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:20:44,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:44,107 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:44,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:20:44,107 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:44,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1128884138, now seen corresponding path program 1 times [2024-11-28 04:20:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:44,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728287277] [2024-11-28 04:20:44,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:44,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:20:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728287277] [2024-11-28 04:20:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728287277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:51,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:20:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633165465] [2024-11-28 04:20:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:51,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:20:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:51,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:20:51,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:20:51,144 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:20:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:51,396 INFO L93 Difference]: Finished difference Result 242 states and 300 transitions. [2024-11-28 04:20:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:20:51,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2024-11-28 04:20:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:51,413 INFO L225 Difference]: With dead ends: 242 [2024-11-28 04:20:51,413 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 04:20:51,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:20:51,415 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 5 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:51,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 677 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:20:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 04:20:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2024-11-28 04:20:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.2340425531914894) internal successors, (174), 143 states have internal predecessors, (174), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-28 04:20:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 249 transitions. [2024-11-28 04:20:51,458 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 249 transitions. Word has length 100 [2024-11-28 04:20:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:51,459 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 249 transitions. [2024-11-28 04:20:51,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:20:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 249 transitions. [2024-11-28 04:20:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:20:51,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:51,466 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:51,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:20:51,467 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:51,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1119241339, now seen corresponding path program 1 times [2024-11-28 04:20:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920060927] [2024-11-28 04:20:51,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:21:02,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:02,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920060927] [2024-11-28 04:21:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920060927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:02,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:02,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:21:02,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121889562] [2024-11-28 04:21:02,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:02,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:21:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:02,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:21:02,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:21:02,620 INFO L87 Difference]: Start difference. First operand 198 states and 249 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:21:06,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:11,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:15,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:19,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:23,840 INFO L93 Difference]: Finished difference Result 249 states and 308 transitions. [2024-11-28 04:21:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:21:23,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2024-11-28 04:21:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:23,843 INFO L225 Difference]: With dead ends: 249 [2024-11-28 04:21:23,843 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 04:21:23,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:21:23,844 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 7 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:23,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1714 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 4 Unknown, 0 Unchecked, 20.8s Time] [2024-11-28 04:21:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 04:21:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2024-11-28 04:21:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 143 states have internal predecessors, (172), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-28 04:21:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 247 transitions. [2024-11-28 04:21:23,865 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 247 transitions. Word has length 106 [2024-11-28 04:21:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:23,866 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 247 transitions. [2024-11-28 04:21:23,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:21:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 247 transitions. [2024-11-28 04:21:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 04:21:23,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:23,872 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:23,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:21:23,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:23,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1357800383, now seen corresponding path program 1 times [2024-11-28 04:21:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:23,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340131207] [2024-11-28 04:21:23,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:23,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:21:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340131207] [2024-11-28 04:21:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340131207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:29,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:29,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:21:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617570066] [2024-11-28 04:21:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:29,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:21:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:29,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:21:29,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:21:29,403 INFO L87 Difference]: Start difference. First operand 198 states and 247 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:21:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:29,507 INFO L93 Difference]: Finished difference Result 313 states and 380 transitions. [2024-11-28 04:21:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:21:29,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2024-11-28 04:21:29,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:29,513 INFO L225 Difference]: With dead ends: 313 [2024-11-28 04:21:29,514 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:21:29,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:21:29,515 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:29,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 686 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:21:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2024-11-28 04:21:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.2116788321167884) internal successors, (166), 139 states have internal predecessors, (166), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-11-28 04:21:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2024-11-28 04:21:29,534 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 141 [2024-11-28 04:21:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:29,536 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2024-11-28 04:21:29,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:21:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2024-11-28 04:21:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:21:29,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:29,539 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:29,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:21:29,540 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:29,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:29,540 INFO L85 PathProgramCache]: Analyzing trace with hash -200941205, now seen corresponding path program 1 times [2024-11-28 04:21:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:29,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437360404] [2024-11-28 04:21:29,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:29,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 04:21:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437360404] [2024-11-28 04:21:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437360404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:35,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:21:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158169533] [2024-11-28 04:21:35,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:35,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:21:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:35,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:21:35,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:21:35,612 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 04:21:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:35,883 INFO L93 Difference]: Finished difference Result 248 states and 304 transitions. [2024-11-28 04:21:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:21:35,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2024-11-28 04:21:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:35,887 INFO L225 Difference]: With dead ends: 248 [2024-11-28 04:21:35,887 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:21:35,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:21:35,888 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:35,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 890 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:21:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:21:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-28 04:21:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.2056737588652482) internal successors, (170), 143 states have internal predecessors, (170), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-28 04:21:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2024-11-28 04:21:35,902 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 147 [2024-11-28 04:21:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:35,902 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2024-11-28 04:21:35,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 04:21:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2024-11-28 04:21:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:21:35,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:35,905 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:35,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:21:35,906 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:35,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1764365140, now seen corresponding path program 1 times [2024-11-28 04:21:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039872182] [2024-11-28 04:21:35,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:21:41,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:41,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039872182] [2024-11-28 04:21:41,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039872182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:41,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:41,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:21:41,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25856584] [2024-11-28 04:21:41,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:41,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:21:41,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:41,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:21:41,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:21:41,976 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:21:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:42,232 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2024-11-28 04:21:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:21:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2024-11-28 04:21:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:42,235 INFO L225 Difference]: With dead ends: 248 [2024-11-28 04:21:42,236 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:21:42,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:21:42,237 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:42,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 675 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:21:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:21:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2024-11-28 04:21:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 139 states have internal predecessors, (165), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-11-28 04:21:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2024-11-28 04:21:42,250 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 153 [2024-11-28 04:21:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:42,251 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2024-11-28 04:21:42,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:21:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2024-11-28 04:21:42,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 04:21:42,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:42,254 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:42,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:21:42,255 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:42,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash 965134937, now seen corresponding path program 1 times [2024-11-28 04:21:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801280974] [2024-11-28 04:21:42,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:42,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:21:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801280974] [2024-11-28 04:21:49,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801280974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:49,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:49,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:21:49,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125121518] [2024-11-28 04:21:49,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:49,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:21:49,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:49,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:21:49,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:49,108 INFO L87 Difference]: Start difference. First operand 193 states and 237 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:21:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:49,438 INFO L93 Difference]: Finished difference Result 250 states and 303 transitions. [2024-11-28 04:21:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:21:49,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2024-11-28 04:21:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:49,441 INFO L225 Difference]: With dead ends: 250 [2024-11-28 04:21:49,441 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 04:21:49,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:49,443 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 2 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:49,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1101 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:21:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 04:21:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2024-11-28 04:21:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (37), 36 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-28 04:21:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2024-11-28 04:21:49,456 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 160 [2024-11-28 04:21:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:49,457 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2024-11-28 04:21:49,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:21:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2024-11-28 04:21:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 04:21:49,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:49,461 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:49,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:21:49,462 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:49,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2097784857, now seen corresponding path program 1 times [2024-11-28 04:21:49,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:49,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241213806] [2024-11-28 04:21:49,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:21:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241213806] [2024-11-28 04:21:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241213806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:57,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:21:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129069624] [2024-11-28 04:21:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:57,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:21:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:57,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:21:57,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:21:57,364 INFO L87 Difference]: Start difference. First operand 198 states and 242 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-28 04:21:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:58,138 INFO L93 Difference]: Finished difference Result 249 states and 301 transitions. [2024-11-28 04:21:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:21:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 166 [2024-11-28 04:21:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:58,149 INFO L225 Difference]: With dead ends: 249 [2024-11-28 04:21:58,149 INFO L226 Difference]: Without dead ends: 191 [2024-11-28 04:21:58,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:21:58,151 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:58,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1538 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:21:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-28 04:21:58,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-28 04:21:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 138 states have internal predecessors, (162), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-28 04:21:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 232 transitions. [2024-11-28 04:21:58,170 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 232 transitions. Word has length 166 [2024-11-28 04:21:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:58,171 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 232 transitions. [2024-11-28 04:21:58,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-28 04:21:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 232 transitions. [2024-11-28 04:21:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-28 04:21:58,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:58,174 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:58,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:21:58,175 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:58,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1128868307, now seen corresponding path program 1 times [2024-11-28 04:21:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:58,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488234843] [2024-11-28 04:21:58,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:22:06,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488234843] [2024-11-28 04:22:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488234843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:22:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167298521] [2024-11-28 04:22:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:06,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:22:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:06,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:22:06,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:22:06,190 INFO L87 Difference]: Start difference. First operand 191 states and 232 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-28 04:22:10,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:22:14,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:22:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:16,831 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2024-11-28 04:22:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:22:16,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 185 [2024-11-28 04:22:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:16,834 INFO L225 Difference]: With dead ends: 237 [2024-11-28 04:22:16,834 INFO L226 Difference]: Without dead ends: 192 [2024-11-28 04:22:16,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:22:16,836 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:16,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1249 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2024-11-28 04:22:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-28 04:22:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2024-11-28 04:22:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-28 04:22:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2024-11-28 04:22:16,853 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 185 [2024-11-28 04:22:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2024-11-28 04:22:16,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-28 04:22:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2024-11-28 04:22:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 04:22:16,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:16,859 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:16,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:22:16,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:16,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash -821047252, now seen corresponding path program 1 times [2024-11-28 04:22:16,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:16,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770536377] [2024-11-28 04:22:16,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:16,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:22:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770536377] [2024-11-28 04:22:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770536377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:22:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628251247] [2024-11-28 04:22:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:23,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:23,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:23,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:23,205 INFO L87 Difference]: Start difference. First operand 191 states and 231 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:22:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:24,025 INFO L93 Difference]: Finished difference Result 337 states and 397 transitions. [2024-11-28 04:22:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2024-11-28 04:22:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:24,028 INFO L225 Difference]: With dead ends: 337 [2024-11-28 04:22:24,028 INFO L226 Difference]: Without dead ends: 194 [2024-11-28 04:22:24,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:24,030 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 1 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:24,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 610 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:22:24,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-28 04:22:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-28 04:22:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 141 states have internal predecessors, (164), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-28 04:22:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2024-11-28 04:22:24,042 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 192 [2024-11-28 04:22:24,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:24,043 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2024-11-28 04:22:24,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:22:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2024-11-28 04:22:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 04:22:24,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:24,046 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:24,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:22:24,046 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:24,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1075932206, now seen corresponding path program 1 times [2024-11-28 04:22:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804833605] [2024-11-28 04:22:24,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:22:33,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:33,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804833605] [2024-11-28 04:22:33,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804833605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:33,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:22:33,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534377356] [2024-11-28 04:22:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:33,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:33,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:33,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:33,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:33,936 INFO L87 Difference]: Start difference. First operand 194 states and 234 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:22:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:34,761 INFO L93 Difference]: Finished difference Result 333 states and 389 transitions. [2024-11-28 04:22:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2024-11-28 04:22:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:34,764 INFO L225 Difference]: With dead ends: 333 [2024-11-28 04:22:34,764 INFO L226 Difference]: Without dead ends: 194 [2024-11-28 04:22:34,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:34,766 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:34,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 594 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:22:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-28 04:22:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-28 04:22:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 141 states have internal predecessors, (163), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-28 04:22:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 233 transitions. [2024-11-28 04:22:34,780 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 233 transitions. Word has length 192 [2024-11-28 04:22:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:34,780 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 233 transitions. [2024-11-28 04:22:34,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:22:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 233 transitions. [2024-11-28 04:22:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-28 04:22:34,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:34,783 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:34,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:22:34,783 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:34,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash 109488580, now seen corresponding path program 1 times [2024-11-28 04:22:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:34,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673314178] [2024-11-28 04:22:34,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:22:40,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673314178] [2024-11-28 04:22:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673314178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:40,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:40,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:22:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800242675] [2024-11-28 04:22:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:40,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:40,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:40,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:40,718 INFO L87 Difference]: Start difference. First operand 194 states and 233 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-28 04:22:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:40,833 INFO L93 Difference]: Finished difference Result 329 states and 383 transitions. [2024-11-28 04:22:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 197 [2024-11-28 04:22:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:40,836 INFO L225 Difference]: With dead ends: 329 [2024-11-28 04:22:40,836 INFO L226 Difference]: Without dead ends: 194 [2024-11-28 04:22:40,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:40,837 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:40,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:22:40,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-28 04:22:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-11-28 04:22:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 137 states have (on average 1.167883211678832) internal successors, (160), 139 states have internal predecessors, (160), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-28 04:22:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2024-11-28 04:22:40,849 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 230 transitions. Word has length 197 [2024-11-28 04:22:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:40,850 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 230 transitions. [2024-11-28 04:22:40,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-28 04:22:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 230 transitions. [2024-11-28 04:22:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 04:22:40,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:40,852 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:40,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:22:40,852 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:40,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash 495167305, now seen corresponding path program 1 times [2024-11-28 04:22:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769503682] [2024-11-28 04:22:40,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:40,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:22:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769503682] [2024-11-28 04:22:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769503682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:47,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:47,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:22:47,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832352595] [2024-11-28 04:22:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:47,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:22:47,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:47,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:22:47,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:22:47,323 INFO L87 Difference]: Start difference. First operand 192 states and 230 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-28 04:22:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:47,496 INFO L93 Difference]: Finished difference Result 331 states and 385 transitions. [2024-11-28 04:22:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:22:47,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 199 [2024-11-28 04:22:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:47,498 INFO L225 Difference]: With dead ends: 331 [2024-11-28 04:22:47,498 INFO L226 Difference]: Without dead ends: 190 [2024-11-28 04:22:47,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:22:47,500 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:47,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1073 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:22:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-28 04:22:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2024-11-28 04:22:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 133 states have (on average 1.1654135338345866) internal successors, (155), 135 states have internal predecessors, (155), 34 states have call successors, (34), 18 states have call predecessors, (34), 19 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2024-11-28 04:22:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2024-11-28 04:22:47,511 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 199 [2024-11-28 04:22:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:47,512 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2024-11-28 04:22:47,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-28 04:22:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2024-11-28 04:22:47,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-28 04:22:47,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:47,514 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:47,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:22:47,515 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:47,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash -9410609, now seen corresponding path program 1 times [2024-11-28 04:22:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:47,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174627158] [2024-11-28 04:22:47,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:23:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:23:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:23:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174627158] [2024-11-28 04:23:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174627158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:23:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:23:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 04:23:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731180946] [2024-11-28 04:23:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:23:07,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:23:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:23:07,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:23:07,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:23:07,884 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 13 states, 11 states have (on average 9.363636363636363) internal successors, (103), 9 states have internal predecessors, (103), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:11,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:23:16,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:23:19,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:23:19,319 INFO L93 Difference]: Finished difference Result 209 states and 247 transitions. [2024-11-28 04:23:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:23:19,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.363636363636363) internal successors, (103), 9 states have internal predecessors, (103), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 205 [2024-11-28 04:23:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:23:19,322 INFO L225 Difference]: With dead ends: 209 [2024-11-28 04:23:19,322 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 04:23:19,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:23:19,323 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:23:19,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2021 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2024-11-28 04:23:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 04:23:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2024-11-28 04:23:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.1538461538461537) internal successors, (165), 146 states have internal predecessors, (165), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:23:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2024-11-28 04:23:19,335 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 205 [2024-11-28 04:23:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:23:19,336 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2024-11-28 04:23:19,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.363636363636363) internal successors, (103), 9 states have internal predecessors, (103), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2024-11-28 04:23:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:23:19,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:23:19,339 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:23:19,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:23:19,339 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:23:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:23:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1174425770, now seen corresponding path program 1 times [2024-11-28 04:23:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:23:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931371485] [2024-11-28 04:23:19,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:23:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:23:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:23:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:23:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:23:29,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931371485] [2024-11-28 04:23:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931371485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:23:29,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:23:29,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:23:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167890712] [2024-11-28 04:23:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:23:29,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:23:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:23:29,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:23:29,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:23:29,667 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:23:30,475 INFO L93 Difference]: Finished difference Result 383 states and 451 transitions. [2024-11-28 04:23:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:23:30,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2024-11-28 04:23:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:23:30,479 INFO L225 Difference]: With dead ends: 383 [2024-11-28 04:23:30,479 INFO L226 Difference]: Without dead ends: 208 [2024-11-28 04:23:30,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:23:30,481 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 2 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:23:30,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 586 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:23:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-28 04:23:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2024-11-28 04:23:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 147 states have (on average 1.1496598639455782) internal successors, (169), 150 states have internal predecessors, (169), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:23:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 244 transitions. [2024-11-28 04:23:30,495 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 244 transitions. Word has length 207 [2024-11-28 04:23:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:23:30,495 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 244 transitions. [2024-11-28 04:23:30,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 244 transitions. [2024-11-28 04:23:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:23:30,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:23:30,498 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:23:30,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:23:30,498 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:23:30,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:23:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 388427880, now seen corresponding path program 1 times [2024-11-28 04:23:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:23:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203500960] [2024-11-28 04:23:30,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:23:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:23:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:23:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:23:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:23:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203500960] [2024-11-28 04:23:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203500960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:23:43,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:23:43,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:23:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753945278] [2024-11-28 04:23:43,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:23:43,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:23:43,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:23:43,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:23:43,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:23:43,188 INFO L87 Difference]: Start difference. First operand 206 states and 244 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:23:44,565 INFO L93 Difference]: Finished difference Result 381 states and 447 transitions. [2024-11-28 04:23:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:23:44,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2024-11-28 04:23:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:23:44,569 INFO L225 Difference]: With dead ends: 381 [2024-11-28 04:23:44,569 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 04:23:44,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:23:44,571 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 1 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:23:44,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 729 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:23:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 04:23:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2024-11-28 04:23:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.1468531468531469) internal successors, (164), 146 states have internal predecessors, (164), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:23:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2024-11-28 04:23:44,584 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 207 [2024-11-28 04:23:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:23:44,585 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2024-11-28 04:23:44,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2024-11-28 04:23:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 04:23:44,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:23:44,587 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:23:44,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:23:44,588 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:23:44,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:23:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1374613221, now seen corresponding path program 1 times [2024-11-28 04:23:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:23:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730883783] [2024-11-28 04:23:44,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:23:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:23:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:23:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:23:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:23:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730883783] [2024-11-28 04:23:54,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730883783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:23:54,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:23:54,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:23:54,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034017071] [2024-11-28 04:23:54,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:23:54,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:23:54,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:23:54,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:23:54,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:23:54,846 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:23:56,696 INFO L93 Difference]: Finished difference Result 386 states and 454 transitions. [2024-11-28 04:23:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:23:56,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2024-11-28 04:23:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:23:56,700 INFO L225 Difference]: With dead ends: 386 [2024-11-28 04:23:56,700 INFO L226 Difference]: Without dead ends: 210 [2024-11-28 04:23:56,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:23:56,703 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 1 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:23:56,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1135 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:23:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-28 04:23:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-11-28 04:23:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 154 states have internal predecessors, (172), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:23:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 247 transitions. [2024-11-28 04:23:56,720 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 247 transitions. Word has length 208 [2024-11-28 04:23:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:23:56,720 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 247 transitions. [2024-11-28 04:23:56,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:23:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 247 transitions. [2024-11-28 04:23:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 04:23:56,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:23:56,723 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:23:56,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:23:56,724 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:23:56,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:23:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1516484889, now seen corresponding path program 1 times [2024-11-28 04:23:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:23:56,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430969787] [2024-11-28 04:23:56,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:23:56,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:24:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430969787] [2024-11-28 04:24:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430969787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:15,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 04:24:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714685929] [2024-11-28 04:24:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:15,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:24:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:15,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:24:15,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:24:15,991 INFO L87 Difference]: Start difference. First operand 210 states and 247 transitions. Second operand has 14 states, 12 states have (on average 8.833333333333334) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:24:20,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:24:24,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:24:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:28,930 INFO L93 Difference]: Finished difference Result 233 states and 272 transitions. [2024-11-28 04:24:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:24:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.833333333333334) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2024-11-28 04:24:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:28,934 INFO L225 Difference]: With dead ends: 233 [2024-11-28 04:24:28,934 INFO L226 Difference]: Without dead ends: 231 [2024-11-28 04:24:28,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:24:28,935 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 8 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:28,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2478 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 04:24:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-28 04:24:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 211. [2024-11-28 04:24:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 152 states have (on average 1.138157894736842) internal successors, (173), 155 states have internal predecessors, (173), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:24:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 248 transitions. [2024-11-28 04:24:28,950 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 248 transitions. Word has length 208 [2024-11-28 04:24:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:28,951 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 248 transitions. [2024-11-28 04:24:28,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.833333333333334) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:24:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 248 transitions. [2024-11-28 04:24:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-28 04:24:28,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:28,954 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:28,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:24:28,955 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:28,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1851385092, now seen corresponding path program 1 times [2024-11-28 04:24:28,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:28,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995874515] [2024-11-28 04:24:28,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:28,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:24:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995874515] [2024-11-28 04:24:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995874515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:40,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022154570] [2024-11-28 04:24:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:40,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:40,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:40,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:40,268 INFO L87 Difference]: Start difference. First operand 211 states and 248 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:24:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:41,159 INFO L93 Difference]: Finished difference Result 383 states and 446 transitions. [2024-11-28 04:24:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:41,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2024-11-28 04:24:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:41,163 INFO L225 Difference]: With dead ends: 383 [2024-11-28 04:24:41,163 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 04:24:41,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:41,164 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 7 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:41,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 555 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:24:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 04:24:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-11-28 04:24:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 152 states have (on average 1.131578947368421) internal successors, (172), 155 states have internal predecessors, (172), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:24:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2024-11-28 04:24:41,180 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 247 transitions. Word has length 210 [2024-11-28 04:24:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:41,180 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 247 transitions. [2024-11-28 04:24:41,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:24:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 247 transitions. [2024-11-28 04:24:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-28 04:24:41,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:41,183 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:41,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:24:41,183 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:41,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash 881577568, now seen corresponding path program 1 times [2024-11-28 04:24:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466304267] [2024-11-28 04:24:41,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:24:52,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:52,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466304267] [2024-11-28 04:24:52,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466304267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:52,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:24:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933861686] [2024-11-28 04:24:52,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:52,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:24:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:52,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:24:52,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:24:52,100 INFO L87 Difference]: Start difference. First operand 211 states and 247 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:24:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:53,743 INFO L93 Difference]: Finished difference Result 383 states and 445 transitions. [2024-11-28 04:24:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:24:53,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 211 [2024-11-28 04:24:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:53,745 INFO L225 Difference]: With dead ends: 383 [2024-11-28 04:24:53,746 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 04:24:53,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:24:53,746 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:53,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1147 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:24:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 04:24:53,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-28 04:24:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 155 states have (on average 1.1290322580645162) internal successors, (175), 158 states have internal predecessors, (175), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:24:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2024-11-28 04:24:53,759 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 211 [2024-11-28 04:24:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:53,759 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2024-11-28 04:24:53,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:24:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2024-11-28 04:24:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-28 04:24:53,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:53,762 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:53,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:24:53,762 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:53,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash -843030754, now seen corresponding path program 1 times [2024-11-28 04:24:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:53,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570833885] [2024-11-28 04:24:53,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:53,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:25:05,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:05,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570833885] [2024-11-28 04:25:05,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570833885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:05,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:05,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:25:05,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554791765] [2024-11-28 04:25:05,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:05,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:25:05,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:05,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:25:05,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:05,339 INFO L87 Difference]: Start difference. First operand 214 states and 250 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:06,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:06,552 INFO L93 Difference]: Finished difference Result 382 states and 442 transitions. [2024-11-28 04:25:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:25:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 211 [2024-11-28 04:25:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:06,555 INFO L225 Difference]: With dead ends: 382 [2024-11-28 04:25:06,555 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 04:25:06,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:06,557 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 7 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:06,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 735 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:25:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 04:25:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-28 04:25:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 155 states have (on average 1.1225806451612903) internal successors, (174), 158 states have internal predecessors, (174), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:25:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 249 transitions. [2024-11-28 04:25:06,573 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 249 transitions. Word has length 211 [2024-11-28 04:25:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:06,574 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 249 transitions. [2024-11-28 04:25:06,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 249 transitions. [2024-11-28 04:25:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-28 04:25:06,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:06,576 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:06,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 04:25:06,576 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:06,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1755865211, now seen corresponding path program 1 times [2024-11-28 04:25:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121909028] [2024-11-28 04:25:06,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:25:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121909028] [2024-11-28 04:25:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121909028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:25:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405257369] [2024-11-28 04:25:19,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:19,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:25:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:19,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:25:19,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:25:19,126 INFO L87 Difference]: Start difference. First operand 214 states and 249 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:20,785 INFO L93 Difference]: Finished difference Result 382 states and 441 transitions. [2024-11-28 04:25:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:25:20,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2024-11-28 04:25:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:20,788 INFO L225 Difference]: With dead ends: 382 [2024-11-28 04:25:20,788 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 04:25:20,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:25:20,789 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 2 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:20,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1151 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:25:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 04:25:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-28 04:25:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 158 states have (on average 1.120253164556962) internal successors, (177), 161 states have internal predecessors, (177), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:25:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 252 transitions. [2024-11-28 04:25:20,801 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 252 transitions. Word has length 212 [2024-11-28 04:25:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:20,802 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 252 transitions. [2024-11-28 04:25:20,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:20,803 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 252 transitions. [2024-11-28 04:25:20,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-28 04:25:20,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:20,805 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:20,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:25:20,805 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:20,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -167385219, now seen corresponding path program 1 times [2024-11-28 04:25:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602074215] [2024-11-28 04:25:20,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:25:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602074215] [2024-11-28 04:25:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602074215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:33,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039087079] [2024-11-28 04:25:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:33,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:33,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:33,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:33,035 INFO L87 Difference]: Start difference. First operand 217 states and 252 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:34,583 INFO L93 Difference]: Finished difference Result 381 states and 438 transitions. [2024-11-28 04:25:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:25:34,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2024-11-28 04:25:34,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:34,585 INFO L225 Difference]: With dead ends: 381 [2024-11-28 04:25:34,586 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 04:25:34,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:34,587 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 7 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:34,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 909 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:25:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 04:25:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-28 04:25:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 158 states have (on average 1.1139240506329113) internal successors, (176), 161 states have internal predecessors, (176), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:25:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 251 transitions. [2024-11-28 04:25:34,597 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 251 transitions. Word has length 212 [2024-11-28 04:25:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:34,598 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 251 transitions. [2024-11-28 04:25:34,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 251 transitions. [2024-11-28 04:25:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-28 04:25:34,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:34,600 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:34,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:25:34,600 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:34,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 258165561, now seen corresponding path program 1 times [2024-11-28 04:25:34,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:34,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098400299] [2024-11-28 04:25:34,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:25:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098400299] [2024-11-28 04:25:46,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098400299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:46,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:46,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:25:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031449803] [2024-11-28 04:25:46,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:46,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:25:46,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:46,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:25:46,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:25:46,349 INFO L87 Difference]: Start difference. First operand 217 states and 251 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:50,651 INFO L93 Difference]: Finished difference Result 383 states and 440 transitions. [2024-11-28 04:25:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:25:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2024-11-28 04:25:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:50,654 INFO L225 Difference]: With dead ends: 383 [2024-11-28 04:25:50,655 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 04:25:50,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:25:50,657 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 7 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:50,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1775 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 04:25:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 04:25:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-28 04:25:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 163 states have (on average 1.1104294478527608) internal successors, (181), 166 states have internal predecessors, (181), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:25:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 256 transitions. [2024-11-28 04:25:50,676 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 256 transitions. Word has length 213 [2024-11-28 04:25:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:50,677 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 256 transitions. [2024-11-28 04:25:50,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:25:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 256 transitions. [2024-11-28 04:25:50,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-28 04:25:50,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:50,679 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:50,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:25:50,679 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:50,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 766944375, now seen corresponding path program 1 times [2024-11-28 04:25:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936022050] [2024-11-28 04:25:50,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 04:26:05,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:05,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936022050] [2024-11-28 04:26:05,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936022050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:05,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:05,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:26:05,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035801910] [2024-11-28 04:26:05,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:05,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:26:05,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:05,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:26:05,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:26:05,833 INFO L87 Difference]: Start difference. First operand 222 states and 256 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:26:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:08,367 INFO L93 Difference]: Finished difference Result 382 states and 436 transitions. [2024-11-28 04:26:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:26:08,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2024-11-28 04:26:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:08,371 INFO L225 Difference]: With dead ends: 382 [2024-11-28 04:26:08,371 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 04:26:08,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:26:08,373 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 8 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:08,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1239 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:26:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 04:26:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2024-11-28 04:26:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 164 states have internal predecessors, (177), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 04:26:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 252 transitions. [2024-11-28 04:26:08,390 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 252 transitions. Word has length 213 [2024-11-28 04:26:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:08,390 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 252 transitions. [2024-11-28 04:26:08,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 04:26:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 252 transitions. [2024-11-28 04:26:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 04:26:08,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:08,394 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:08,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 04:26:08,394 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:08,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1457537170, now seen corresponding path program 1 times [2024-11-28 04:26:08,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:08,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180380553] [2024-11-28 04:26:08,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:08,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:26:28,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063048947] [2024-11-28 04:26:28,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:28,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:28,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:28,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2591f445-afd0-4bfa-b7a1-f6289cb95504/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process